Impulse Tests on Substations

This paper presents a description and discussion of a series of impulse tests on two substations of the Public Service Electric and Gas Company´s system. The 220-kv. substation of the Roseland switching station was surged through eight miles of overhead line. A study of the effects of various amounts of connected bus and station apparatus was made. The effect of different arrester locations on the protection afforded to the station insulation was determined. The Elizabethport 26-kv. substation was surged through five miles of overhead line and two miles of cable. The effects of various arrester locations, both on the line and in the substation were determined. The attenuation in and surge impedance of the cable were measured.